Home / 42,429.37-63,644.07-12,847.15

Finding the Fourth Proportional to 42,429.37, 63,644.07 and 12,847.15

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Solution

The fourth proportional to 42,429.37, 63,644.07 and 12,847.15 is: 19,270.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,429.37 : 63,644.07 = 12,847.15 : x
  2. Step 2: Convert to fraction form
    42,429.37/63,644.07 = 12,847.15/x
  3. Step 3: Cross multiply
    42,429.37x = 63,644.07 × 12,847.15
  4. Step 4: Simplify right side
    42,429.37x = 817,644,913.90
  5. Step 5: Solve for x
    x = 817,644,913.90/42,429.37
  6. Step 6: Final answer
    x = 19,270.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.